SELECT a1,a2,replace(a2, "豫ICP备16006180号-", "") a22,a3,a4,a5 FROM `aaab` order by a2;SELECT a1,a2,substring(a2, 22) a22,a3,a4,a5 FROM `aaab` order by a22;…
题意不难理解,但是一开始还是没有看清楚题目.Replace the first occurrence of the find string within the text by the replace-by string, then try to perform the same replacement again on the new text. Continue until the find string no longer occurs within the text, and then…